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Re: [Seqan-dev] Time complexity of posGlobalize

<-- thread -->
<-- date -->
  • From: "Weese, David" <weese@campus.fu-berlin.de>
  • To: SeqAn Development <seqan-dev@lists.fu-berlin.de>
  • Date: Fri, 29 Jul 2011 10:49:37 +0200
  • Acceptlanguage: de-DE
  • Reply-to: SeqAn Development <seqan-dev@lists.fu-berlin.de>
  • Subject: Re: [Seqan-dev] Time complexity of posGlobalize

> OK, so if I've understood correctly I think the following should work. 
> I'm trying to set up a ESA that uses a SAValue of type unsigned. I get a 
> load of compile errors about No match for ‘getValueI2(unsigned int)’. 
> Can you let me know what I'm doing wrong or if this is not possible.
> 

I get them too. Originally global positions were meant for suffix array construction algorithms that cannot cope with multiple sequences and hence have to use the concatenation of all sequences. The positions in the suffix array are then related to the concatenation (= global positions). Downstream algorithms like suffix tree iterators should work with local as well as with global positions.
It seems that the suffix array construction algorithm Skew7Multi assumes that the suffix array contains local positions, I will have a look at it.
For now, I would recommend to use local (bitcompressed) positions as SAValue.

David


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  • Follow-Ups:
    • Re: [Seqan-dev] Time complexity of posGlobalize
      • From: John Reid <j.reid@mail.cryst.bbk.ac.uk>
  • References:
    • [Seqan-dev] Time complexity of posGlobalize
      • From: John Reid <j.reid@mail.cryst.bbk.ac.uk>
    • Re: [Seqan-dev] Time complexity of posGlobalize
      • From: "Weese, David" <weese@campus.fu-berlin.de>
    • Re: [Seqan-dev] Time complexity of posGlobalize
      • From: John Reid <j.reid@mail.cryst.bbk.ac.uk>
    • Re: [Seqan-dev] Time complexity of posGlobalize
      • From: John Reid <j.reid@mail.cryst.bbk.ac.uk>
    • Re: [Seqan-dev] Time complexity of posGlobalize
      • From: "Weese, David" <weese@campus.fu-berlin.de>
    • Re: [Seqan-dev] Time complexity of posGlobalize
      • From: John Reid <j.reid@mail.cryst.bbk.ac.uk>
    • Re: [Seqan-dev] Time complexity of posGlobalize
      • From: "Weese, David" <weese@campus.fu-berlin.de>
    • Re: [Seqan-dev] Time complexity of posGlobalize
      • From: John Reid <j.reid@mail.cryst.bbk.ac.uk>
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